Koskamo

L50 UK Company Data MCP

Provides UK Companies House data for AI agents, including newly registered companies, overdue accounts, and director/owner changes. It exposes routes as tools via Streamable HTTP, requiring payment in USDC on Base via x402 for most calls, though bad input is refused for free.

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Endpoint and access

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L50 UK Company Data MCP logo, by L50Community listingStreamable HTTPNo sign-inEndpoint checked 2026-11-07Published by L50
You need:No account or API key
MCP endpoint (Streamable HTTP)
https://companies.l50automation.com/mcp
Vendor documentation

What its tools do

5 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (5)

5 of 5 have a description · 5 of 5 declare behavior hints · 0 of 5 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Find newly registered UK companies filtered by town, postcode, or industry
  • Identify UK companies with overdue or soon-due Companies House accounts
  • Track director appointments, resignations, and owner (PSC) changes
  • Access a daily feed of new UK director and owner changes

Source and maintenance

Community listingRegistry 1.2.0
mcp-registry: io.github.lewisororke/l50-uk-company-data@1.2.0Project website

Protocol and capabilities

Server
l50-companies 1.2.0
MCP protocol negotiated in check
2025-11-25
Tools
5 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {}
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

UK Companies House data for AI agents: newly registered companies and companies with overdue accounts, with director names, website checks and likely emails; director and owner (PSC) changes for a watchlist or across the whole UK daily. Paid per call with x402 in USDC on Base. No account or API key. Paid tools cost a few cents each in USDC on Base via x402; bad input is refused for free and failed calls are not charged. companies_changes_feed_sample is free. All L50 tools in one server: https://api.l50automation.com/mcp

Tools

5 advertised

companies_new — companies new
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Up to 10 newly registered UK companies (Companies House) filtered by town, postcode or industry, with director, website check and email details. Costs $0.10 per call, paid in USDC on Base with x402.

companies_new input schema
{
  "type": "object",
  "properties": {
    "max": {
      "type": "integer",
      "maximum": 10,
      "minimum": 1
    },
    "days": {
      "type": "integer",
      "maximum": 30,
      "minimum": 1
    },
    "industry": {
      "enum": [
        "trades",
        "retail",
        "hospitality",
        "beauty",
        "professional",
        "health",
        "fitness",
        "ecommerce",
        "automotive"
      ],
      "type": "string"
    },
    "locality": {
      "type": "string"
    },
    "postcode": {
      "type": "string"
    }
  }
}
companies_new annotations
{
  "readOnlyHint": true,
  "openWorldHint": true
}
companies_overdue — companies overdue
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Up to 10 UK companies with overdue (or soon-due) Companies House accounts, with director and email details. Leads for accountants. Costs $0.20 per call, paid in USDC on Base with x402.

companies_overdue input schema
{
  "type": "object",
  "properties": {
    "max": {
      "type": "integer",
      "maximum": 10,
      "minimum": 1
    },
    "mode": {
      "enum": [
        "overdue",
        "due_soon",
        "both"
      ],
      "type": "string"
    },
    "industry": {
      "enum": [
        "trades",
        "retail",
        "hospitality",
        "beauty",
        "professional",
        "health",
        "fitness",
        "ecommerce",
        "automotive"
      ],
      "type": "string"
    },
    "locality": {
      "type": "string"
    },
    "dueWithinDays": {
      "type": "integer",
      "maximum": 180,
      "minimum": 1
    }
  }
}
companies_overdue annotations
{
  "readOnlyHint": true,
  "openWorldHint": true
}
companies_changes — companies changes
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Director appointments, resignations and owner (PSC) changes at up to 20 UK companies since a date, from Companies House. Costs $0.05 per call, paid in USDC on Base with x402.

companies_changes input schema
{
  "type": "object",
  "required": [
    "numbers"
  ],
  "properties": {
    "days": {
      "type": "integer",
      "maximum": 3650,
      "minimum": 1
    },
    "since": {
      "type": "string",
      "format": "date"
    },
    "numbers": {
      "type": "string",
      "maxItems": 20,
      "description": "Comma-separated company numbers (max 20)"
    }
  }
}
companies_changes annotations
{
  "readOnlyHint": true,
  "openWorldHint": true
}
companies_changes_feed — companies changes feed
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

New UK director appointments, resignations and owner (PSC) changes from the last 24 hours across all companies, filtered by town, postcode, industry and change type. Up to 100 rows, refreshed daily from Companies House. Costs $0.10 per call, paid in USDC on Base with x402.

companies_changes_feed input schema
{
  "type": "object",
  "properties": {
    "max": {
      "type": "integer",
      "maximum": 100,
      "minimum": 1
    },
    "types": {
      "type": "string",
      "description": "Comma-separated: officer_appointed, officer_resigned, owner_added, owner_removed"
    },
    "industry": {
      "enum": [
        "trades",
        "retail",
        "hospitality",
        "beauty",
        "professional",
        "health",
        "fitness",
        "ecommerce",
        "automotive"
      ],
      "type": "string"
    },
    "locality": {
      "type": "string"
    },
    "postcode": {
      "type": "string",
      "description": "Postcode areas or districts, comma-separated, e.g. M,SK"
    }
  }
}
companies_changes_feed annotations
{
  "readOnlyHint": true,
  "openWorldHint": true
}
companies_changes_feed_sample — companies changes feed sample
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Free: up to 3 rows from the daily UK director and owner changes feed, with the same filters as companies_changes_feed. Try before you pay.

companies_changes_feed_sample input schema
{
  "type": "object",
  "properties": {
    "types": {
      "type": "string",
      "description": "Comma-separated: officer_appointed, officer_resigned, owner_added, owner_removed"
    },
    "industry": {
      "enum": [
        "trades",
        "retail",
        "hospitality",
        "beauty",
        "professional",
        "health",
        "fitness",
        "ecommerce",
        "automotive"
      ],
      "type": "string"
    },
    "locality": {
      "type": "string"
    },
    "postcode": {
      "type": "string",
      "description": "Postcode areas or districts, comma-separated, e.g. M,SK"
    }
  }
}
companies_changes_feed_sample annotations
{
  "readOnlyHint": true,
  "openWorldHint": true
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
1053 ms
95th percentile latency
1053 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 1053 ms · metadata changed · 5 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http l50-uk-company-data-mcp https://companies.l50automation.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add l50-uk-company-data-mcp --url https://companies.l50automation.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable l50-uk-company-data-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "l50-uk-company-data-mcp": {
      "url": "https://companies.l50automation.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "l50-uk-company-data-mcp": {
      "type": "streamableHttp",
      "url": "https://companies.l50automation.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start l50-uk-company-data-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "l50-uk-company-data-mcp": {
      "type": "http",
      "url": "https://companies.l50automation.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http l50-uk-company-data-mcp https://companies.l50automation.com/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://companies.l50automation.com/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "l50-uk-company-data-mcp": {
      "serverUrl": "https://companies.l50automation.com/mcp"
    }
  }
}

Let your agent find its tools

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